UBUNTU-CVE-2025-50537 (CVE-2025-50537)

Vulnerability from osv_ubuntu – Published: 2026-01-26 16:15 – Updated: 2026-05-20 15:22 – Source website
VLAI
Details

Stack overflow vulnerability in eslint before 9.26.0 when serializing objects with circular references in eslint/lib/shared/serialization.js. The exploit is triggered via the RuleTester.run() method, which validates test cases and checks for duplicates. During validation, the internal function checkDuplicateTestCase() is called, which in turn uses the isSerializable() function for serialization checks. When a circular reference object is passed in, isSerializable() enters infinite recursion, ultimately causing a stack overflow.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "eslint",
            "binary_version": "5.0.1~dfsg-4build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "eslint",
        "purl": "pkg:deb/ubuntu/eslint@5.0.1~dfsg-4build3?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.0.1~dfsg-4build2",
        "5.0.1~dfsg-4build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "eslint",
            "binary_version": "6.4.0~dfsg+~6.1.9-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "eslint",
        "purl": "pkg:deb/ubuntu/eslint@6.4.0~dfsg+~6.1.9-2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.16.0~dfsg+~4.16.8-5",
        "5.16.0~dfsg+~4.16.8-6",
        "5.16.0~dfsg+~4.16.8-7",
        "5.16.0~dfsg+~4.16.8-8",
        "6.4.0~dfsg+~6.1.9-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "eslint",
            "binary_version": "6.4.0~dfsg+~6.1.9-11build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "eslint",
        "purl": "pkg:deb/ubuntu/eslint@6.4.0~dfsg+~6.1.9-11build3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.4.0~dfsg+~6.1.9-7",
        "6.4.0~dfsg+~6.1.9-11build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "eslint",
            "binary_version": "6.4.0~dfsg+~6.1.9-12"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "eslint",
        "purl": "pkg:deb/ubuntu/eslint@6.4.0~dfsg+~6.1.9-12?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.4.0~dfsg+~6.1.9-12"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "eslint",
            "binary_version": "6.4.0~dfsg+~6.1.9-12"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "eslint",
        "purl": "pkg:deb/ubuntu/eslint@6.4.0~dfsg+~6.1.9-12?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.4.0~dfsg+~6.1.9-12"
      ]
    }
  ],
  "aliases": [],
  "details": "Stack overflow vulnerability in eslint before 9.26.0 when serializing objects with circular references in eslint/lib/shared/serialization.js. The exploit is triggered via the RuleTester.run() method, which validates test cases and checks for duplicates. During validation, the internal function checkDuplicateTestCase() is called, which in turn uses the isSerializable() function for serialization checks. When a circular reference object is passed in, isSerializable() enters infinite recursion, ultimately causing a stack overflow.",
  "id": "UBUNTU-CVE-2025-50537",
  "modified": "2026-05-20T15:22:54Z",
  "published": "2026-01-26T16:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-50537"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-50537"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/eslint/eslint/issues/19646"
    },
    {
      "type": "REPORT",
      "url": "https://gist.github.com/lyyffee/2ee1815e5c2da82c05e9838b9bfefbbc"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-50537"
  ]
}



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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.